Clinical Chemistry
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Clinical Chemistry 35: 674-678, 1989;
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Clinical Chemistry, Vol 35, 674-678, Copyright © 1989 by American Association for Clinical Chemistry

An alpha slow-moving high-density-lipoprotein subfraction in serum of a patient with radiation enteritis and peritoneal carcinosis

J Peynet, A Legrand, B Messing, F Thuillier and F Rousselet
Laboratoire Central de Biochimie, Hopital Lariboisiere, Paris, France.

An alpha slow-moving high-density-lipoprotein (HDL) subfraction was seen in a patient presenting with radiation enteritis and peritoneal carcinosis, who was given long-term cyclic parenteral nutrition. This subfraction, observed in addition to normal HDL, was precipitated with low-density lipoproteins (LDL) and very-low-density lipoproteins (VLDL) by sodium phosphotungstate-magnesium chloride. The patient's serum lipoproteins were analyzed after fractionation by density gradient ultracentrifugation. The alpha slow-moving HDL floated in the ultracentrifugation subfractions with densities ranging from 1.028 to 1.084 kg/L, and their main apolipoproteins included apolipoprotein E in addition to apolipoprotein A-I. These HDL were larger than HDL2. The pathogenesis of this unusual HDL subfraction is hypothesized.




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Copyright © 1989 by the American Association for Clinical Chemistry.